Offshore Decommissioning and Restoration



Outstanding Features

Looking through the lens of the issues that dominate today’s industry, participants will increase their familiarity with the basic principles of Offshore oil and gas decommissioning and restoration processes. Focus will be on learning from a real world operational point of view, rather than theory.

Course Overview

    Starting from little to no knowledge of the processes from planning to execution of an offshore decommissioning project, the course offers a high level perspective of elements such as optioneering, scheduling, budget development, regulatory and stakeholder identification and management.

    The course covers facility late life, post CoP, maintenance and required systems through to facility removal and disposal and post removal site environmental monitoring for fixed, floating and subsea production and export systems.

Target Audience

This is course is suitable and beneficial for all non-technical and technical alike, along with more experienced people that require a broader understanding of the decommissioning and restoration of offshore oil and gas facilities.

You Will Learn How to

Describe the Decommissioning Process, explain the Working Principles of the equipment used to rig down dismantle, remove and transport oil and gas facilities from depleted / uneconomic oil and gas leases understand the processes related to Facility Late Life Maintenance Identify contributing factors to planning and budgeting development Describe option development and selection understand environmental impacts. Recognize regulatory requirements from around the globe appreciate the consequences of decommissioning gone wrong.


  • Market Outlook and Global Development
  • Topside/Jacket Decommissioning Strategy and Planning
  • FPSO/FSU Decommissioning Strategy and Planning
  • Subsea Decommissioning
  • Late Life Maintenance Strategy for Reducing Decommissioning Costs

Course Details

    Day 1

    Market Outlook & Global Development

  • What is Decommissioning?
  • Decommissioning Timeframe and Roadmap
  • Cost Increases
  • Stakeholders
  • Alternative Energies
  • Day 2

    Topside/Jacket Decommissioning Strategy and Planning

  • The $ Phases of Decommissioning
  • Maintenance Strategy
  • Offshore Decommissioning Workflow
  • Operations and Maintenance Framework
  • Removal Options
  • Oil and Gas Work Breakdown Structure
  • Day 3

    FPSO/FSU Decommissioning Strategy and planning

  • FPSO Preparation for Removal
  • FPSO What are the Issues?
  • FPSO Strategy
  • Removal from Field to Final Location
  • Disposal Gone Wrong
  • Day 4 (Subsea Decommissioning)

  • Cost Drivers
  • Pipeline Cleaning (Pigging)
  • Leaving Infrastructure, Pipelines, on the Seabed (For / Against)
  • Removal of Manifolds and Trees
  • Pipeline Removal
  • Concrete Coated
  • Flexible’s
  • Umbilical Removal
  • Bundle Removal
  • Design for Decommissioning (D4D)
  • Lessons Learnt
  • Opportunities for Technology
  • Decommissioning Tool Kit
  • D4D Exercise
  • Day 5

    Late Life Maintenance Strategy for Reducing Decommissioning Costs

  • Change in Platform Activities During Transition
  • Change in Work Practices and Attitudes
  • Platform Requirements and System Requirements
  • Personnel Issues
  • Long Term Liability
  • Skillset of Decommissioning Team

Course Length

5 Days

Course Director

John Cox


Upon completion, you will receive a Worley Academy Certificate of Completion.

More Information

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